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Difficulty: EasyRouting Concepts and Dynamic Routing Protocols

A network administrator needs to connect two routers across a redundant network infrastructure. The administrator wants the routers to automatically exchange reachability information and update their routing tables dynamically whenever a network path fails. Which of the following options should be configured to meet this requirement?

  1. Dynamic interior gateway protocol (such as OSPF)Answer
  2. B
    Static default gateway route on both router interfaces
  3. C
    Virtual Router Redundancy Protocol (VRRP) virtual IP assignment
  4. D
    Layer 2 VLAN tagging on 802.1Q trunk links

Answer

Dynamic interior gateway protocol (such as OSPF)
Dynamic interior gateway protocols (such as OSPF, EIGRP, or RIP) allow routers to automatically discover neighboring routers, exchange network routes, and dynamically update path selections when topology changes or link failures occur.

Step-by-Step Solution

1
Analyze the operational requirements
Identified the need for automatic reachability exchange and dynamic topology convergence during link failures.
The scenario highlights that routing tables must automatically update without manual administrator intervention when network changes occur.
2
Evaluate routing mechanism options
Dynamic routing protocols dynamically adapt to link changes, whereas static routes require manual reconfiguration.
Interior Gateway Protocols (IGPs) like OSPF periodically or event-driven exchange routing messages to discover paths automatically.

Key Concept

Dynamic Routing Protocol Functionality
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Topics

Routing Concepts and Dynamic Routing Protocols

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